CN109945978A - A kind of automatic focusing structure - Google Patents
A kind of automatic focusing structure Download PDFInfo
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- CN109945978A CN109945978A CN201811574679.XA CN201811574679A CN109945978A CN 109945978 A CN109945978 A CN 109945978A CN 201811574679 A CN201811574679 A CN 201811574679A CN 109945978 A CN109945978 A CN 109945978A
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Abstract
The present invention relates to a kind of automatic focusing structures, the second cylinder including being provided with the first cylinder of infrared detector and with the relative movement of the first cylinder, second cylinder is provided with infrared lens, by driving device first cylinder and the second cylinder are relatively moved, to obtain the effect focused automatically, furthermore, by one of infrared detector and Acquisition Circuit or it is completely provided with heat sink, pass through the reasonable setting to the biggish circuit position of calorific value, to reduce influence of the biggish circuit of calorific value to infrared detector, improve the performance and temperature measurement accuracy of thermal imaging system.
Description
Technical field
The present invention relates to a kind of automatic focusing structures of thermal infrared imager.
Background technique
In the prior art, thermal infrared imager generally is completed to focus using the Power focus mechanism of driving eyeglass, such as passes through
Traditional structure, need to change the outfit camera lens or superimposing lens, the at high cost or superimposing lens of this motor-driven lens that will lead to or change the outfit and mirror
Infrared optical attenuations caused by after piece change is more are big, image degradation.In addition, the hardware circuit of existing thermal imaging system be generally divided into can be divided into it is red
Outer thermal imagery detector circuit part and processing circuit part；Processing circuit part such as carries out the processing of image, calorific value one
As it is larger.Since thermal infrared imager is very sensitive to heat, the heat that processing circuit part generates during the work time be will affect red
The precision of outer thermal imagery detector.How focused automatically, how while solving automatic focus, as far as possible at reduction
It is desirable for managing the heat that circuit part generates to influence infrared thermal imagery detector to improve the performance and temperature measurement accuracy of thermal imaging system
It solves the problems, such as.
Summary of the invention
In view of the above technical problems, the present invention proposes a kind of automatic focusing structure of thermal infrared imager.
In order to solve the above-mentioned technical problem, technical scheme is as follows:
A kind of automatic focusing structure, including be provided with infrared detector the first cylinder and with the first cylinder relative movement
Second cylinder, second cylinder are provided with infrared lens, make first cylinder and the second cylinder phase by driving device
To movement.
Further, the outer wall of the first cylinder and the inner wall of the second cylinder are nested, and the part that contacts with each other is using thermally conductive good
Good material.
Further, infrared detection circuit includes infrared detector and Acquisition Circuit, and the infrared detector or acquisition are electric
One of road is completely provided with heat sink, and the heat sink is in contact with the first cylinder.
Further, the infrared detector is provided with heat sink, and the Acquisition Circuit is set to the rear wall of the first cylinder,
The infrared detector is connect with Acquisition Circuit using inserting mode, and the grafting circuit is set to Acquisition Circuit, infrared acquisition
The lead that connects of device is plugged at the grafting circuit of Acquisition Circuit after heat sink.
Further, the Acquisition Circuit includes infrared detector connection circuit and analog to digital conversion circuit, infrared detector
It connects and is connected between circuit and analog to digital conversion circuit by conducting wire or soft arranging wire, infrared detector connection circuit is set to first
In vivo, analog to digital conversion circuit is set to that the first cylinder is outer or the second cylinder.
Further, the driving device includes motor, motor driving shaft, and the motor is fixed in thermal infrared imager
Portion after the motor driving shaft passes through the second cylinder, drives the first cylinder.
Further, the motor may be disposed at the second cylinder or inside bracket or thermal imaging system that thermal imaging system inside is arranged
The partition of setting or the bracket of the second cylinder setting.
Further, the driving device includes motor, motor driving shaft, and the motor is fixed in thermal infrared imager
Portion, the motor driving shaft drive the second cylinder.
Further, the motor may be disposed at the bracket that at the first cylinder or the first cylinder is arranged.
Further, the motor is enclosed with metal shell.
The beneficial effects of the present invention are: by being provided with the first cylinder of infrared detector, and it is provided with infrared mirror
Second cylinder of head, the first cylinder and the relative movement of the second cylinder, so that the effect focused automatically is obtained, in addition, by infrared spy
It surveys one of device and Acquisition Circuit or is completely provided with heat sink, by the reasonable setting to the biggish circuit position of calorific value, from
And influence of the biggish circuit of calorific value to infrared detector is reduced, improve the performance and temperature measurement accuracy of thermal imaging system.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the schematic diagram of another structure of the present invention；
Fig. 3 is the cross-sectional view of the structure of handheld thermal imager；
Fig. 4 is the enlarged drawing of automatic focusing structure in Fig. 3；
Fig. 5 is the handheld thermal imager cross-sectional view of the structure with compartment；
Fig. 6 is the handheld thermal imager cross-sectional view of the structure with compartment and radiator；
Fig. 7 is the handheld thermal imager another kind cross-sectional view of the structure with compartment and radiator；
Fig. 8 is the handheld thermal imager cross-sectional view of the structure with compartment；
Fig. 9 is the handheld thermal imager another kind cross-sectional view of the structure with compartment and radiator.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described further.
Embodiment one:
As shown in Figure 1, a kind of shell of the automatic focusing structure of thermal infrared imager, comprising: procapsid 9,10 and of body housing
Show mask 17, infrared lens 8 are arranged in thermal infrared imager front end, and the setting of display screen 15 is at display mask 17, in body housing 10
It is additionally provided with handle 18.In the enclosure interior of thermal infrared imager, it is provided with automatic focusing structure, including the first cylinder 1, is arranged
There is infrared detector 3；Second cylinder 2, is provided with infrared lens 8, is attached in such a way that relative position is fixed；Pass through drive
Dynamic device relatively moves the first cylinder 1 and the second cylinder 2.First cylinder 1 and the second cylinder 2 are mutually matched shape,
Such as first cylinder 1 and the second cylinder 2 be all made of the cylinder of various shapes such as round, oval, rectangular, the first cylinder 1 and second
Cylinder 2 is respectively provided with the rear wall of metal material, can be using all or part of closed mode between rear wall and cylinder, and rear wall can
Also can remove rear wall in certain embodiments using various shape.
First cylinder 1 can be slided in the second cylinder 2, the mutually nested structure of the two, such as by the first cylinder 1 in this example
It is nested in the second cylinder 2, the inner wall nesting of the outer wall of the first cylinder 1 and the second cylinder 2, the first cylinder 1 and second
Mutually thermally conductive good between body 2, the position that contacts with each other can partly or entirely use thermally conductive good metal material, the first cylinder 1
Outer wall and the second cylinder 2 inner wall ensure can be smooth movement but also take into account the gap of good heat radiating.Wherein nested structure
It can be all or part of nesting, the barrel of the first cylinder 1 and the second cylinder 2 can have opening.Preferably, the first cylinder 1
Closing mode is used with the barrel of the second cylinder 2, the first cylinder 1 is set to the inside of the second cylinder 2, in order to radiate and lead
Heat.In addition, the first cylinder 1 and the second cylinder 2 are convenient just for the sake of description, the restriction to cylinder, the first cylinder 1 are not constituted
Alternatively referred to as inner cylinder, the second cylinder 2 can be described as outer cylinder.
It is commonly equipped with infrared detection circuit in first cylinder 1, according to the performance of different application and detector, described first
Infrared detector 3 of the cylinder 1 at least provided with infrared detection circuit.Corresponding infrared detector 3, the first cylinder 1 is configured with its company
The structure connect, the first cylinder 1 has the opening for meeting the imaging of infrared detector 3, to receive the light of infrared lens 8；Infrared acquisition
Device 3 is configured with heat sink 6 for its heat dissipation, and heat sink 6 uses thermally conductive good material, and such as metal material can be with the first cylinder 1
Inner wall is connected；In order to conduct heat to the thermal balance that the first cylinder 1 is convenient for infrared detector 3.To reduce stray light to red
The interference of external detector 3, the first cylinder 1 and heat sink 6 constitute the enclosure space of infrared detector 3.
Infrared detection circuit generally comprises infrared detector 3 and Acquisition Circuit 4；Acquisition Circuit 4 is adopted configured with such as signal
Collection, analog to digital conversion circuit export the AD value of thermal imagery after the analog signal for exporting infrared detector 3 carries out analog-to-digital conversion
Data.Acquisition Circuit is provided with heat sink 5, and heat sink 5 uses thermally conductive good material, such as metal material, can and with first
The inner wall of body 1 is connected, in order to conduct heat to the first cylinder 1.The heat sink 6 of the heat dissipation of infrared detector 3, Acquisition Circuit dissipate
The heat sink 5 of heat can have shape, the adjustment and adaptation on position.
The connection type of Acquisition Circuit 4 and infrared detector 3 can have the mode of various configurations.Such as it can the side of fixation
Formula connection is red at welding at this time or female contact if infrared detector 3 is solderable or is plugged in Acquisition Circuit 3 by socket
External detector connects circuit.It is also possible to movable connection, infrared detector 3 is such as connected by flexible cord or FPC flexible circuit and is managed
Foot and Acquisition Circuit 3.Be also possible to part be fixedly connected, piecemeal activity connection, such as part is connected using flexible cord or FPC flexible circuit
It connects, partially uses and be welded in Acquisition Circuit 3.
In other implementations, infrared detection circuit can also only include infrared detector 3, inside infrared detector 3
Circuit with analog-to-digital conversion directly exports the signal of infrared detector 3 by pin interface, such as the AD Value Data of thermal imagery.Its
In his embodiment, infrared detection circuit can also have the function of part or all of processing circuit；As for exporting thermal imagery
AD Value Data, treated for exporting thermal imagery for data for showing, record etc. etc. one of them or it is multiple simultaneously.In another example
In, Acquisition Circuit 4 can be configured to the image processing circuit with thermal-image data or its, such as be converted to display, record etc.
Data, and exported.
Infrared detector 3 is pluggable to be fixedly connected on socket, and the socket is welded in Acquisition Circuit 4.Another
In one example, the Acquisition Circuit 4 with socket is assemblied in outside the rear wall of the first cylinder 1, rear wall there are the opening by socket,
The pin 7 of infrared detector 3 is connect by socket with Acquisition Circuit 4；Rear wall can also be simultaneously as the scattered of infrared detector 3 at this time
Insulation material layer can also be arranged in hot plate between the rear wall and Acquisition Circuit 4, so that the heat of Acquisition Circuit 4 is not easy conduction extremely
Infrared detector 3.
Acquisition Circuit 3 can be partly or entirely assemblied in inside the first cylinder 1, outside the first cylinder 1, inside the second cylinder 2
Space, outside the second cylinder 2；In some cases, Acquisition Circuit 3 can be divided into two parts, be welded with the part of infrared detector 3
That is infrared detector connection circuit and the part configured with analog to digital conversion circuit, the two are flexible by conducting wire or soft arranging wire such as FPC
Circuit connection, if analog to digital conversion circuit calorific value is little, Acquisition Circuit 3 can be configured all in the first cylinder 1.
A kind of embodiment, as shown in figure 3, infrared detector 3 is plugged in Acquisition Circuit part, infrared acquisition by socket
The socket circuit of device 3 and Acquisition Circuit, is configured at the first cylinder 1, and the analog-to-digital conversion process circuit part of Acquisition Circuit, fever
It measures larger, is configured in outside the first cylinder 1 or the second cylinder 2, socket circuit and analog to digital conversion circuit pass through conducting wire or soft row
Line 19 connects.
Another embodiment, Acquisition Circuit 4 can be divided into two parts, be welded with the part of infrared detector 3, and be configured with
The part of analog to digital conversion circuit, the two are connected by FPC flexible circuit, and the latter is configured at the outside of the second cylinder 2；
When using conducting wire or flexible circuit, the weight inside the first cylinder 1 on the one hand can be reduced, is convenient for stepper motor
On the other hand 14 dragging can reduce the influence that Acquisition Circuit 4 is generated heat to infrared detector 3.When using conducting wire or flexible electrical
When road connects and needs across the first cylinder 1 or the second cylinder 2, according to different designs, the phase of the first cylinder 1, the second cylinder 2
It answers position there are corresponding converting interfaces and connect with inside and outside FPC, or there are the openings for passing through FPC flexible circuit.
The general part for considering that 4 calorific value of Acquisition Circuit is small, realizes convenient for design, connect jointly with infrared detector 3；And
Calorific value is big or the big part of difficulty is realized in design, is flexibly connected with infrared detector 3.
With reference to shown in Fig. 5~Fig. 7, Acquisition Circuit 4 divides the part acquisition to be fixedly connected with 3 position of infrared detector electric
Road, and movable part Acquisition Circuit opposite with 3 position of infrared detector；Part Acquisition Circuit calorific value is larger and is configured at
In the cavity that two partitions 27 are constituted with aft case, it is preferred that also using second partition 27 as heat dissipation；As shown in fig. 7, in shell
Inside may also be configured with multi-tap 32；Acquisition Circuit 4 passes through opening for the first cylinder 1 and the second cylinder 2 by soft arranging wire or FPC
Mouthful, it is connect with multi-tap 32；Multi-tap 32 is connected with part Acquisition Circuit 31 by being configured at the winding displacement 30 of crossed beam trunking
It connects.Wherein the opening of the second cylinder 2 is slightly larger than the opening of the first cylinder 1, and the opening of the second cylinder 2 depends on the first cylinder 1
Movement travel in the second cylinder 2.
As shown in figure 4, the schematic diagram of the first cylinder 1, the second cylinder 2 amplification；Acquisition Circuit 13 divide for infrared detector 3
The part Acquisition Circuit that position is fixedly connected and the part Acquisition Circuit being flexibly connected with 3 position of infrared detector, part acquire
Outer wall of the circuit configuration in the second cylinder 2；Part Acquisition Circuit passes through the first cylinder 1 and the second cylinder 2 by soft arranging wire or FPC
Opening, be attached with part Acquisition Circuit 31.It does not need to obtain since flexible cord is located at the part in the first cylinder 1, because
The aperture of this first cylinder 1 is closed after assembling flexible cord with glue, the flexible cord length inside 1 outside of the first cylinder and the second cylinder 2,
It is located at the movement travel in the second cylinder 2 depending on the first cylinder 1, and there are certain surpluses.Wherein, with infrared detector 3
The part Acquisition Circuit that position is flexibly connected can be analog to digital conversion circuit 31.
Second cylinder 2, is provided with infrared lens, is configured in such a way that relative position is fixed；Infrared lens and
Can be there are many embodiment between two cylinders 2, in Fig. 1,2 front end of the second cylinder is fixedly connected with procapsid 9, infrared lens
8 can be assemblied in procapsid 9；In other examples, as shown in Fig. 2, before infrared lens 8 can directly be assemblied in the second cylinder 2
End.The mode of assembly can be through a variety of implementations such as screw thread, bayonet, screw fixations.Second cylinder 2, procapsid 9 are adopted
With thermally conductive good material, such as metal material；For the outside for the procapsid 9 that preferably radiates, there is radiating groove.
Preferably, infrared lens 8 are connect in a manner of clamping with the front end of procapsid 9 or the second cylinder 2, in this way convenient for more
Change different camera lenses；Focusing structure realizes that is, camera lens is motionless, passes through by the relative motion of the first cylinder 1, the second cylinder 2
Driving has the first cylinder 1 of infrared detector, to change the distance between detector and camera lens, realizes focusing；It is easy to implement
Change the outfit different camera lenses.
In the optical path that infrared detector 3 receives infrared lens 8, it is also configured with the washer of thermal imagery verification, which can
It is configured at the positions such as infrared lens 8, the opening of the first cylinder 1, the second cylinder 2.Preferably, 1 opening of the first cylinder configures
The washer for having thermal imagery to verify is located between the first cylinder 1 opening and infrared lens 8 after assembly.
Heat dissipation to ensure infrared detector 3 is good, can be by the metal structure of the front of the second cylinder 2 and infrared lens 8
Part or its metal connecting piece well contact, and make the heat of infrared detector 3, can be from first the 1 to the second cylinder of cylinder 2 to infrared mirror
First 8 are transmitted, or can well contact the front of the second cylinder 2 with the hardware of front casing 9 or its metal heat sink
Conducting,
The advantages of above structure, the first cylinder 1 and the second cylinder 2 play firm effect, and effect, the electromagnetism of heat dissipation
Interference, the advantage that the processing is simple, stable.
Driving device is configured to the mode fixed with the cylinder relative position of one of them and is configured, with another cylinder
Body is configured in such a way that relative position is mobile；Generally using driving device and the second cylinder relative position fixation by the way of into
Row setting, is configured in such a way that relative position is movable with the first cylinder.Various motors, pneumatic, magnetic can be used in driving device
The driving device of power, it is preferred that use stepping motor structure.In application scheme, driving device may include stepper motor 14, electricity
Machine drive shaft 13 such as screw rod, bearing matched with motor driving shaft 13 or nut；In other examples, it may also include variable-speed motor
Structure.
As shown in Figure 1, thermal infrared imager mounted inside has partition 11, stepper motor 14 is fixed on the partition 11, stepping electricity
Machine 14 is fixed with 2 relative position of the second cylinder；The bearing (not shown) cooperated with motor driving shaft 13 is fixed on the first cylinder 1
Rear wall 15；The rear wall that motor driving shaft 13 passes through the second cylinder 2 is connect with the rear wall of the first cylinder 1.(do not schemed by control device
Show) stepper motor 14 is controlled, stepper motor 14 is driven by motor driving shaft 13, keeps the first cylinder 1 axial in the second cylinder 2
Movement such as moves forward or back, thus to change infrared detector 3 at a distance from infrared lens 8, to reach automatic focusing.
Driving device is set, it can be there are many embodiment；Such as the fixed company of stepper motor 14 and 2 relative position of the second cylinder
Mode is connect, stepper motor 14 can be fixed on inside or outside 2 rear wall of the second cylinder, be also possible to be assemblied in the second cylinder
Equal supporting structure inside or outside 2；It can also be configured in the structure fixed with 2 relative position of the second cylinder, such as the partition of Fig. 1
11。
It is configured in such a way that relative position is movable with the first cylinder 1, it can will spiral shell matched with motor driving shaft 13
Female or bearing, is assemblied in the internal or external structure that the first cylinder 1 is fixedly connected, such as rear wall, the first cylinder 1 of the first cylinder 1
Configured with the bearing being connect with motor driving shaft 13 on the circuit board of internal cooling fin 5, such as the first cylinder 1, can get more
Compact volume.
The second cylinder 2 as shown in Fig. 3~Fig. 9 is equipped with bracket 24, and stepper motor 14 is fixed on the bracket 24, keeps stepping electric
Machine 14 is fixed with 2 relative position of the second cylinder；The bearing cooperated with motor driving shaft 13, is fixed on the rear wall 20 of the first cylinder 1.
Bracket 24 preferentially uses the good plate of heat-proof quality, so that two cavitys will be divided into inside thermal infrared imager, with
Ensure the heat of processing circuit, the region for being transmitted to the second cylinder 2 few as far as possible；To reduce stepper motor 14 and Acquisition Circuit
Space hold, as shown in Figure 1, there are open spaces for the position of the corresponding stepper motor 14 of part Acquisition Circuit 12, so that stepping is electric
Machine 14 passes through part Acquisition Circuit；In other examples, part Acquisition Circuit 31 can also be divided into muti-piece circuit board
Since the first cylinder 1 and the second cylinder 2 constitute mutually matched nested structure, the first cylinder 1 can be in the second cylinder 2
Interior activity, the first cylinder 1 are connect with motor driving shaft 13, the motor driving shaft 13 driven according to stepper motor 14, are carried out
Movement；First cylinder 1 and 2 contact surface of the second cylinder are stablized, therefore, it can be achieved that reliable and stable driving.
Motor driving shaft 3 is located at the center line of the first cylinder 1, and such as the first cylinder 1 is circle, and motor driving shaft 3 is located at the
The axis of one cylinder 1 is preferred；When stepper motor 14 is also configured with speed change gear, speed change gear is can be used in motor driving shaft 13
Drive shaft such as screw rod.
To reduce interference of the stepper motor 14 to circuit, it is preferred that be enclosed with metal shell in stepper motor 14, carry out electricity
Magnetic screen.
In other examples, stepper motor 14 can also be fixedly connected with to mode with 1 relative position of the first cylinder, such as will
Stepper motor 14 is fixed on the internal or external of 1 rear wall of the first cylinder, and it is internal or external etc. to be also possible to be set to the first cylinder 1
Supporting structure；It can also be configured in the structure fixed with 1 relative position of the first cylinder.At this point, stepper motor 14 and second
Body 2 is configured in such a way that relative position is movable, can will nut matched with motor driving shaft 13 or bearing, be assemblied in
The internal or external structure of two cylinders 2, such as rear wall, the partition 11 of the second cylinder 2.
In other examples, the first cylinder 1 or the second cylinder can also be cancelled, infrared detector 3 or further include acquisition
Circuit 4, it is living (when cancelling the second cylinder 2) by sliding equipment and the second cylinder 2 (when cancelling the first cylinder 1) or the first cylinder 1
Dynamic connection, the sliding equipment are driven by driving device；The sliding equipment such as guide rail, guide groove, are assemblied on guide rail,
By guide rail assembly in the guide groove of the second cylinder 2.Wherein, the sliding equipment can be with mutually matched axis and bearing.
Display screen 15 is assemblied on frame 17, and frame 17 is thermally conductive good material, such as metal material, for display screen 15
Heat dissipation；The heat sink 16 of circuit board 12 can be by the connection with frame 17, to radiate.
Embodiment two:
It is different from embodiment one, as shown in Fig. 2, the present embodiment is using the barrel of the first cylinder 1 as the constituting portion of procapsid 9
Point, using partition 11 as the composition part of shell, while stepper motor 14 is fixed in the rear wall as the second cylinder 2, comes
Reduce the volume of thermal infrared imager.
The structure between the first cylinder 1 and the second cylinder 2 inside thermal infrared imager is similar with embodiment one, herein no longer
It repeats.
The outer wall of second cylinder 2, when as procapsid 9, outside has radiating groove, radiating fin etc.；After second cylinder 2
Wall has across the hole of motor driving shaft 13；Preferably, the rear wall 15 of the first cylinder 1 uses metal material；After second cylinder 2
Wall also uses nonmetallic materials.
Stepper motor 14 is fixed on the rear wall of the second cylinder 2, and the rear wall 21 of the second cylinder 2 is extended, as shell
Composition part will be divided into two cavitys inside thermal infrared imager, to ensure processing circuit plate 12 while as heat-insulated plate
Heat, the region for being transmitted to the second cylinder 2 few as far as possible.
For the space hold for reducing stepper motor 14 and circuit board 12, the position of the corresponding stepper motor 14 of circuit board 12 is stayed
There is open space, so that stepper motor 14 passes through circuit board 12；In addition, circuit board 12, which can also be divided into muti-piece circuit board, carries out assembly
Connection, thus after being reduced thermal infrared imager volume.
The instrument of above structure can substantially reduce volume and weight and improve radiator structure.
Embodiment three:
As shown in Figure 5 and Figure 8, in this example, stepper motor 14 is fixed on the bracket 24 of the second cylinder 2；Preferably, may be used
It is fixed on partition 26 or partition 22.Firm reduce of operation to ensure stepper motor 14 is vibrated, and can fix stepper motor 14
In partition 26 or partition 22, it is also fixed on the bracket 24 of the second cylinder 2 simultaneously.
Example IV:
It is slightly different with embodiment one, as shown in Figure 6 and Figure 7, a kind of automatic focusing structure of Handheld infrared thermal imager,
It include the first compartment 21, the second compartment 22 and the third compartment 23 between the first compartment 21 and the second compartment 22 in it, the
One compartment 21 is made of the front end of outer housing and first partition 26, the part assembly of the corresponding thermal imagery detector in the front end of outer housing
There is thermal imagery camera lens, the connection of first partition 26 and outer housing is to be tightly connected.
Second compartment 22, is made of the rear end of outer housing and second partition 27, it is preferred that second partition 27 and outer housing
It is connected as being tightly connected；Preferably, one end of the second compartment 22 is display mask, is equipped with display screen.
Third compartment 23 comprising there is first partition 26, second partition 27, outer housing to constitute；Preferably, outer housing has
The structure of through-hole or open type, such as heat release hole 29, in order to and external air currents；The heat for making the second compartment 22, is not easy
In conduction to the first compartment 21.
Automatic focusing structure is provided at the first compartment 21 comprising the first cylinder is provided with infrared detector；The
Two cylinders, are provided with infrared lens, are attached in such a way that relative position is fixed；Lead between first cylinder and the second cylinder
Over-driving device relative movement.
Second compartment 2 is configured with processing circuit 25, the circuit part big configured with heat of processing circuit 25, such as shows
Show signal processing circuit, storage processing circuit, communicating circuit, modulus dress change circuit etc., can be one of them or it is multiple, these
Module can be only fitted to one or more circuit board.
As shown in Fig. 5~Fig. 9, assembling structure has been can be set in the first cylinder 1, and the assembling structure is for assembling infrared acquisition
Device, assembling structure is using the quick material that radiates, such as metal material；For the anti-interference for improving infrared detector, assembling structure
It may be designed as square tubular or cylinder type.Assembling structure is configured with the opening for meeting detector image-forming, to receive the light of camera lens；For
Better heat dissipation, assembling structure are equipped with the heat sink to radiate to infrared detector, and the heat sink is using thermally conductive good
Material, such as metal material, heat sink can be connected with assembling structure；In order to conduct heat to assembling structure, it is convenient for infrared spy
Survey the thermal balance of device.
Infrared detection circuit, it may include infrared detector and Acquisition Circuit；Acquisition Circuit changes electricity configured with such as modulus dress
Road exports the AD Value Data of thermal imagery after the analog signal for exporting infrared detector carries out analog-to-digital conversion.Acquisition Circuit can
Configured with heat sink；Heat sink uses thermally conductive good material, such as metal material.
In other implementations, infrared detection circuit can only include infrared detector, have inside infrared detector
Modulus fills the circuit changed, the signal of infrared detector is directly exported by pin interface, such as the AD Value Data of thermal imagery.
In other embodiments, infrared detection circuit can also have the function of part processing circuit；Such as it is used for heat outputting
The AD Value Data of picture, treated for exporting thermal imagery for data for showing, record etc. etc. one of them or it is multiple simultaneously.But function
Big processing circuit part is consumed, still should be configured in the second compartment 2.
Infrared detector is pluggable to be fixedly connected on socket, and the socket, which is welded in Acquisition Circuit and passes through, to be dissipated
Hot plate.
The connection type of Acquisition Circuit and infrared detector can have the mode of various configurations.It can be fixed form company
It connects, as infrared detector is solderable or is plugged in Acquisition Circuit by socket.Be also possible to movable connection, such as by flexible cord or
FPC flexible circuit connects detector pin and Acquisition Circuit.Be also possible to part be fixedly connected, piecemeal activity connection, such as part
It is connected using flexible cord or FPC flexible circuit, partially uses and be welded in Acquisition Circuit.
Acquisition Circuit can be divided into two parts, be welded with the part of infrared detector, and by automatic focusing structure, it is assemblied in
Inside first compartment 21；The part of analog to digital conversion circuit is assemblied in inside the second compartment 22, and the two passes through conducting wire or soft arranging wire
As FPC line connects.
In one example, Acquisition Circuit can be divided into two parts, be welded with the part of detector and configured with analog-to-digital conversion
The part of circuit, the two are connected by FPC flexible circuit 30, and the latter is configured at the second compartment 22.
In another example, detector is plugged in Acquisition Circuit part, infrared detector and socket circuit by socket
It is configured at the first compartment 21, and the analog-to-digital conversion process circuit part of Acquisition Circuit, calorific value is larger, is configured in first
21 outside of compartment is as in the second compartment 22.
It is contemplated that part and infrared detector, automatic focusing structure that Acquisition Circuit calorific value is small, convenient for designing realization
Common connection, is assemblied in inside the first compartment 21；And calorific value is big or the big part of difficulty is realized in design, it is living with infrared detector
Dynamic connection, and be assemblied in outside the first compartment 21, such as the second compartment 22.
In addition, carrying out air circulation with through-hole on shell；In addition, for provide intensity increase heat dissipation effect, weaken every
Heat radiation between plate can also increase partition in third compartment 23；So that third compartment 23 include be it is one or more every
Cabin.
As shown in figure 5, also can be deformed into and connected by other structures part, such as between first partition 26 and second partition 27
Column structure 28 connects.
Aforementioned barriers material, according to heat dissipation, thermally conductive, heat-insulated different demands, can be various materials according to different designs
Matter can be the various forms convenient for air circulation for the heat release hole of third compartment 23；It preferably can also have radiation air
Fan, when radiator fan is configured at first partition 21 or second partition 22, good heat dissipation effect is easily configured to not noticeable；
Preferably, hole can be configured to various not noticeable forms, so as to beauty.
The instrument of above structure can substantially reduce volume and weight and improve radiator structure.It can be used as the whole of instrument
Body；Further, interlock circuit and structure, such as the shell of shell, part can be also added, to constitute the instrument of various forms, example
Such as various handheld thermal imagers, side hold portable thermal imaging system, online thermal imaging system, wear-type thermal imaging system.Wherein, first every
Electrical cable etc. between cabin and the second compartment, can there are the modes solutions such as crossed beam trunking by the connector that the two assembles
Certainly.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
Member, without departing from the inventive concept of the premise, can also make several improvements and modifications, these improvements and modifications also should be regarded as
In the scope of the present invention.
Claims (10)
1. a kind of automatic focusing structure, which is characterized in that including be provided with infrared detector the first cylinder and with the first cylinder
Second cylinder of relative movement, second cylinder is provided with infrared lens, by driving device make first cylinder with
The relative movement of second cylinder.
2. the automatic focusing structure of a kind of instrument according to claim 1, which is characterized in that the outer wall of the first cylinder and second
The inner wall of body is nested, and the part that contacts with each other is using thermally conductive good material.
3. the automatic focusing structure of a kind of thermal infrared imager according to claim 1, which is characterized in that infrared detection circuit packet
It includes infrared detector and Acquisition Circuit, one of the infrared detector or Acquisition Circuit or is completely provided with heat sink, it is described to dissipate
Hot plate is in contact with the first cylinder.
4. a kind of automatic focusing structure according to claim 3, which is characterized in that the infrared detector is provided with heat dissipation
Plate, the Acquisition Circuit are set to the rear wall of the first cylinder, and the infrared detector is connect with Acquisition Circuit using inserting mode,
The grafting circuit is set to Acquisition Circuit, the grafting for connecing lead and being plugged in Acquisition Circuit after heat sink of infrared detector
At circuit.
5. a kind of automatic focusing structure according to claim 3, which is characterized in that the Acquisition Circuit includes infrared acquisition
Device connects circuit and analog to digital conversion circuit, and infrared detector, which connects, passes through conducting wire or soft arranging wire between circuit and analog to digital conversion circuit
Connection, infrared detector connection circuit are set in the first cylinder, and it is outer or second that analog to digital conversion circuit is set to the first cylinder
Body.
6. a kind of automatic focusing structure according to claim 1, which is characterized in that the driving device includes that electricity is mechanical, electrical
Machine drive shaft, the motor are fixed on inside thermal infrared imager, after the motor driving shaft passes through the second cylinder, drive first
Body.
7. a kind of automatic focusing structure according to claim 6, which is characterized in that the motor may be disposed at the second cylinder
The bracket of the partition or the setting of the second cylinder that are arranged inside the bracket or thermal imaging system being arranged inside place or thermal imaging system.
8. a kind of automatic focusing structure according to claim 1, which is characterized in that the driving device includes that electricity is mechanical, electrical
Machine drive shaft, the motor are fixed on inside thermal infrared imager, and the motor driving shaft drives the second cylinder.
9. a kind of automatic focusing structure according to claim 8, which is characterized in that the motor may be disposed at the first cylinder
The bracket of place or the setting of the first cylinder.
10. a kind of automatic focusing structure according to claim 6 or 8, which is characterized in that the motor is enclosed with metal-back
Body.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2017113959161 | 2017-12-21 | ||
| CN201711395916 | 2017-12-21 | ||
| CN201811164995 | 2018-10-07 | ||
| CN201811164995X | 2018-10-07 |
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| CN201811574679.XA Pending CN109945978A (en) | 2017-12-21 | 2018-12-21 | A kind of automatic focusing structure |
| CN201822159648.XU Active CN209387136U (en) | 2017-12-21 | 2018-12-21 | A kind of automatic focusing structure |
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| CN109945978A (en) * | 2017-12-21 | 2019-06-28 | 杭州美盛红外光电技术有限公司 | A kind of automatic focusing structure |
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| CN209387136U (en) | 2019-09-13 |
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